75660479 has 4 divisors (see below), whose sum is σ = 76942920. Its totient is φ = 74378040.

The previous prime is 75660461. The next prime is 75660509. The reversal of 75660479 is 97406657.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97406657 = 241 ⋅404177.

It is a cyclic number.

It is not a de Polignac number, because 75660479 - 2²⁴ = 58883263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75660379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641132 + ... + 641249.

It is an arithmetic number, because the mean of its divisors is an integer number (19235730).

Almost surely, 2^75660479 is an apocalyptic number.

75660479 is a deficient number, since it is larger than the sum of its proper divisors (1282441).

75660479 is a wasteful number, since it uses less digits than its factorization.

75660479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282440.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 75660479 is about 8698.3032253423. The cubic root of 75660479 is about 422.9506487851.

The spelling of 75660479 in words is "seventy-five million, six hundred sixty thousand, four hundred seventy-nine".